/*
 * Copyright (c) 2011, Nikolaus Moll
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * * Neither the name of the gradecalculator.net nor the
 *   names of its contributors may be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 */
package net.gradecalculator.gui.qt.calculator.widgets;

import java.util.LinkedList;
import java.util.List;

import javax.swing.event.EventListenerList;

import net.gradecalculator.core.interfaces.IElectiveModulesArea;
import net.gradecalculator.core.interfaces.IModuleList;
import net.gradecalculator.core.interfaces.IRegulationsItem;
import net.gradecalculator.gui.qt.calculator.interfaces.IRegulationsItemSelectionListener;
import net.gradecalculator.gui.qt.common.widgets.MultiComboBox;

import com.trolltech.qt.gui.QWidget;

public class ModuleListsSelector extends MultiComboBox
{
    private final IElectiveModulesArea electiveModulesArea;

    private final EventListenerList listeners = new EventListenerList();

    public ModuleListsSelector(final QWidget parent, final IElectiveModulesArea electiveModulesArea)
    {
        super(parent, getValueLists(electiveModulesArea), electiveModulesArea.getPickCount());
        this.electiveModulesArea = electiveModulesArea;
    }

    private static List<String> getValueLists(final IElectiveModulesArea lists)
    {
        final List<String> result = new LinkedList<String>();
        for (final IModuleList type : lists.getModuleLists()) {
            result.add(type.getName());
        }
        return result;
    }

    protected synchronized void notifySelectionChanged(final IRegulationsItem identifier, final boolean selected)
    {
        for (final IRegulationsItemSelectionListener l : this.listeners
                .getListeners(IRegulationsItemSelectionListener.class)) {
            l.selectionChanged(identifier, selected);
        }
    }

    public void addSelectionListener(final IRegulationsItemSelectionListener listener)
    {
        this.listeners.add(IRegulationsItemSelectionListener.class, listener);
    }

    @Override
    protected void selectionChangedEvent(final String item, final boolean isSelected)
    {
        notifySelectionChanged(electiveModulesArea.getChildByName(item), isSelected);
    }

    public void setSelectionEnabled(final boolean isEnabled)
    {}

}